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Table 3 Associations between PFAS concentrations in early pregnancy and gestational age (in weeks) at birth

From: Perfluoroalkyl substances exposure in early pregnancy and preterm birth in singleton pregnancies: a prospective cohort study

PFAS (ng/ml)β (95% CI)Adjusteda β (95% CI)
PFOA0.00 (−0.13, 0.14)−0.00 (−0.14, 0.13)
PFNA0.03 (−0.07, 0.14)0.03 (−0.08, 0.13)
PFDA0.03 (− 0.06, 0.12)0.04 (− 0.05, 0.13)
PFUA0.07 (− 0.02, 0.16)0.06 (− 0.03, 0.15)
PFOS−0.02 (− 0.12, 0.08)0.02 (− 0.08, 0.12)
PFHxS− 0.02 (− 0.15, 0.10)−0.02 (− 0.14, 0.11)
PFHpA0.02 (− 0.04, 0.07)0.02 (− 0.05, 0.08)
PFBS− 0.01 (− 0.09, 0.07)0.02 (− 0.05, 0.10)
PFDoA0.10 (− 0.01, 0.20)0.08 (− 0.02, 0.19)
  1. Note: PFAS concentrations were measured in maternal plasma and have been ln-transformed before entering into the model
  2. aAdjusted for maternal age (years), pre-pregnancy BMI (kg/m2), parity (0, ≥ 1), parental educational levels (≤ 12, > 12 years), pregnancy complicating with chronic diseases (no, yes), infant sex (male, female) and gestational age at blood drawn (weeks)